Follow-up Comment #1, bug #51527 (project make):
== Fact 5 ==
Look at the following:
# this fails
make realclean && make fmtord.log
# /foo/bar is dummy, this path does not exists
# this will be successful
save_path=$PATH
export PATH=/foo/bar:$PATH
# this will be successful
make realclean && make fmtord.log
# this will fail again
export PATH=$save_path
make realclean && make fmtord.log
Even changing the environment in a very slight way is sufficient for the make
not to fall into the pitfall.
= Fact analysis and guessing the source of the problem =
My guess is the following : htlatex.exe produces test-fmtord-l.html by running
latex 2 or 3 times in sequence in subprocesses. Make detects that
test-fmtord-l.html is ready after firs 1st or 2nd suprocess is over and
launches the date-timestamp awk scripts *before* htlatex is actually over.
This creates an interlock between the latex and the awk programs trying to
write-access the same file at the same time, and causes the problem.
I don't know how this happens, and I don't know either whether GNU Make or
MiKTeX htlatex port is to blame.
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